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/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcae.controller;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
public class LoadDynamicConfig {
private static final Logger log = LoggerFactory.getLogger(LoadDynamicConfig.class);
public String propFile = "collector.properties";
public String configFile = "/opt/app/KV-Configuration.json";
public String dMaaPOutputFile = "./etc/DmaapConfig.json";
public LoadDynamicConfig() {
}
public static void main(String[] args) {
Map<String, String> env = System.getenv();
// Check again to ensure new controller deployment related config
if (env.containsKey("CONSUL_HOST") && env.containsKey("CONFIG_BINDING_SERVICE")
&& env.containsKey("HOSTNAME")) {
try {
LoadDynamicConfig lc = new LoadDynamicConfig();
String jsonData = readFile(lc.configFile);
JSONObject jsonObject = new JSONObject(jsonData);
lc.writeconfig(jsonObject);
} catch (Exception e) {
log.error(e.getLocalizedMessage(), e);
e.printStackTrace();
}
} else {
log.info(">>>Static configuration to be used");
}
}
public static String readFile(String filename) {
String result = "";
try (BufferedReader br = new BufferedReader(new FileReader(filename))) {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
result = sb.toString();
} catch (Exception e) {
log.error(e.getLocalizedMessage(), e);
e.printStackTrace();
}
return result;
}
public void writeconfig(JSONObject jsonObject) {
PropertiesConfiguration conf;
try {
conf = new PropertiesConfiguration(propFile);
conf.setEncoding(null);
// update properties based on consul dynamic configuration
Iterator<?> keys = jsonObject.keys();
while (keys.hasNext()) {
String key = (String) keys.next();
// check if any configuration is related to dmaap
// and write into dmaapconfig.json
if (key.startsWith("streams_publishes")) {
// VESCollector only have publish streams
try (FileWriter file = new FileWriter(dMaaPOutputFile)) {
String indentedretstring = (new JSONObject(jsonObject.get(key).toString())).toString(4);
file.write(indentedretstring);
log.info("Successfully written JSON Object to DmaapConfig.json");
} catch (IOException e) {
log.info("Error in writing dmaap configuration into DmaapConfig.json", e);
}
} else {
conf.setProperty(key, jsonObject.get(key).toString());
}
}
conf.save();
} catch (ConfigurationException e) {
log.error(e.getLocalizedMessage(), e);
e.printStackTrace();
}
}
}
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